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Melatonin affects many body functions beyond sleep by interacting with specific receptors in various tissues.

Hair follicle development is controlled by interactions between skin tissues and specific molecular signals.

Anabolic steroids can build muscle and strength but have risks and need more research on their clinical benefits and side effects.

Improving artificial vascular grafts requires better materials and surface designs to reduce blood clotting and support blood vessel cell growth.

Dehydroepiandrosterone (DHEA) is a prohormone important for producing sex steroids and has potential health benefits.

The paper concludes that understanding melanocyte development can help in insights into skin diseases and melanoma diversity.

The Rotterdam Study updated findings on elderly health, focusing on heart disease, genetics, lifestyle effects, and disease understanding.

Calreticulin has roles in healing, immune response, and disease beyond its known functions in the endoplasmic reticulum.

Anticancer drugs are increasingly found in surface waters, and their long-term environmental effects are not well understood, requiring better testing methods.

Human skin makes sexual hormones that affect hair growth, skin health, and healing; too much can cause acne and hair loss, while treatments can manage these conditions.

Treatments that reduce oxidative stress and fix mitochondrial problems may help heal chronic wounds.

The skin's layers protect, sense, and regulate the body's internal balance, but can be prone to cancer.

Chemotherapy can cause various skin reactions, with hair loss being the most common, and proper diagnosis and treatment of these reactions are important.

The secretome from mesenchymal stem cells is a promising treatment that may repair tissue and avoid side effects of stem cell transplantation.

Vitamin D receptor interacts with certain dietary components to help prevent diseases and regulate hair growth.

Zinc oxide nanoparticles in sunscreen do not penetrate deep into the skin.

Polymeric nanoparticles show promise for treating skin diseases.

Wnt signaling is crucial for pigmented hair regeneration by controlling stem cell activation and differentiation.

Melatonin in the skin helps protect against damage from stress and UV rays, and could be used to treat certain skin conditions.

Human skin can make serotonin and melatonin.

TGF-β is crucial for tissue repair and can cause diseases if not properly regulated.

Chitin and chitosan are useful in cosmetics for oral care, haircare, and skincare, including UV protection and strength improvement.

Stem cells are crucial for skin repair and new treatments for chronic wounds.

The conclusion is that proper signaling is crucial for hair growth and development, and errors can lead to cancer or hair loss.

Melatonin is important for skin health and protection, and can be made by the skin or applied to it.

Biomaterials with MSC-derived substances could improve tissue repair and have advantages over direct cell therapy.

Hair follicles help absorb and store topical compounds, aiding targeted drug delivery.

Artificial skin development has challenges, but new materials and understanding cell behavior could improve tissue repair. Also, certain growth factors and hydrogel technology show promise for advanced skin replacement therapies.

A gene called APCDD1, which controls hair growth, is found to be faulty in a type of hair loss called hereditary hypotrichosis simplex.

Male and female bodies respond differently to stress, influenced by hormones and development stages, with implications for stress-related diseases.